From: "Marcus" <mesthlm AT hem DOT passagen DOT se>
Newsgroups: comp.os.msdos.djgpp
Subject: App still hangs on shutdowwn
Date: Thu, 17 Feb 2000 01:23:08 +0100
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hi again!
My application seems to STILL hang sometimes on shutdown. And it's because
of the mouse handler.
This is the code I use know:

To start:
bool initmouse(void)
{
  x.ax = 0;
  __dpmi_regs regs;
  regs.x.ax = 0;
  __dpmi_int(0x33, &regs);
  if(regs.x.ax != 0xFFFF) return false;

  callback_info.pm_offset = (long)mousecallback;
  if (_go32_dpmi_allocate_real_mode_callback_retf(&callback_info,
&callback_regs)) return false;
  regs.x.ax = 0xC;
  regs.x.cx = 63;
  regs.x.es = callback_info.rm_segment;
  regs.x.dx = callback_info.rm_offset;
  __dpmi_int(0x33, &regs);

  _go32_dpmi_lock_data(&callback_info, sizeof(callback_info));
  _go32_dpmi_lock_data(&callback_regs, sizeof(callback_regs));
}

To shutdown:
void uninitmouse(void)
{
  __dpmi_regs regs;
  regs.x.ax = 0xC;
  regs.x.cx = 0;
  regs.x.es = 0;
  regs.x.dx = 0;
  __dpmi_int(0x33, &regs);
  _go32_dpmi_free_real_mode_callback(&callback_info);
}

Tell me what I should do to make an SAFE mouse handler that never crash.
Thank you...

--
/regards Marcus